That was considered but too many things didn’t quite make it into 1.5. We won’t change 1.6 to LTS until it’s been out for a release cycle, so for a few months 1.0 will be LTS and get one last point release while 1.6 is the stable release. After 1.7 is released, 1.6 will become the new LTS and after that 1.0 will be retired and get no further releases.